Vintage Rexall Dental Floss - Firstaid Brand NOS 1920's

This item is from an old Rexall drug store. T are a total of six cardboard containers in this auction that have never been sold to the public. Each cardboard container contains 24 yds. of waxed nylon dental floss. The individual containers are 1" sq. x 1 3/8" tall.

The box that contains all of them is 3" x 4" x 1 1/2" tall. The boxes show their age by discoloration. Most of the items from this store have been from the 1920's, so this is probably about 80 years old.